Rust Repair

[Binder49]

I am going to attempt some rust repair on my 2014 Silverado, welding with a mig welder. I wanted know if I need to disconnect the negative battery cable before welding. I am going to use a repair panel above the right rear wheel. I have never tried this before, and advice would be appreciated.
Thanks

[CamGTP]

Yes, you must disconnect the power. Honestly just take the both cables off the battery to be 100% sure.

 

Sheet metal welding is an art. You can't really weld beads, you are going to have to tac weld it a million times. You also can not do one section for very long because the thin metal will warp. Do a couple welds, then go completely across to the other side. Keep jumping around to not heat one section too much.

 

Watching youtube video's is helpful too.

[davester]

Yes, learn how to do it on scrap sheet metal of the same thickness, until you can do it well w/o blowing holes in it all the time, then start on your truck.

 

And put the ground clamp as near as possible to where you are welding, grinding a clean spot for it to clamp to.

[Binder49]

Thanks for the advice